49 GMC on s10 frame th4OO help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jimbucci · 09-14-2016, 10:04 PM

Building a 49 on s10 frame with a pretty radical 383 stroker. I have a th400 lined up for 150 bucks but its the long shaft not the short. Anyone know if it will work?

iowaboynca · 09-15-2016, 01:05 AM

hmmm....might be a better question for the engine/drivetrain section. Good luck w/your search.
But then again i'm sure someone might be able to answer your question.

**joedoh** · 09-15-2016, 11:51 AM

long tailshaft? not sure it matters long or short, only should matter to driveshaft length really. since you are moving the engine back you will need to make a trans crossmember anyway, and make a driveshaft anyway.

thats just my cruddy opinion based on my limited understanding of the long vs short tailshafts, which is a big deal to use in a chevelle but not such a big deal in a truck you are making new engine and trans mounts and driveshaft.

and I will say it in pittsburghese: get dahn nere an nat and yinz can use the tranny, I's stunned!

Jimbucci · 09-15-2016, 02:41 PM

Quote:

Originally Posted by joedoh

long tailshaft? not sure it matters long or short, only should matter to driveshaft length really. since you are moving the engine back you will need to make a trans crossmember anyway, and make a driveshaft anyway.

thats just my cruddy opinion based on my limited understanding of the long vs short tailshafts, which is a big deal to use in a chevelle but not such a big deal in a truck you are making new engine and trans mounts and driveshaft.

and I will say it in pittsburghese: get dahn nere an nat and yinz can use the tranny, I's stunned!

Your pittsburgese is very fluent lol. I bought an ezchassis kit with a 400 cross member. As long as the mounting points are the same I think I should be good. Ed didn't ask me which tailshaft I have so I assume the cross member bolts in the same spot. This is my first Chevy build so I'm not sure on their trannys. Everything up till now had a c6 on it and the tailshaft of those always mattered

**joedoh** · 09-15-2016, 03:20 PM

yep you should be golden! I grew up in the north hills, go stillers!

**mr48chev** · 09-15-2016, 04:41 PM

Since you will have to build a driveshaft anyhow the longer tail shaft is just that = longer.

If you were hardcore on having a short tail shaft you could pull the guts out of the trans, swap tail shafts and extension housings and go again. It may not be worth the effort and cost though.

09-14-2016, 10:04 PM	#1
Jimbucci Registered User Join Date: Sep 2016 Location: Pittsburgh Pa Posts: 11	49 GMC on s10 frame th4OO help Building a 49 on s10 frame with a pretty radical 383 stroker. I have a th400 lined up for 150 bucks but its the long shaft not the short. Anyone know if it will work?

09-15-2016, 01:05 AM	#2
iowaboynca Registered User Join Date: Aug 2012 Location: West Side of the valley, CA Posts: 878	Re: 49 GMC on s10 frame th4OO help hmmm....might be a better question for the engine/drivetrain section. Good luck w/your search. But then again i'm sure someone might be able to answer your question. __________________ Build: "1950" GMC -Charlotte Last edited by iowaboynca; 09-15-2016 at 01:15 AM.

09-15-2016, 11:51 AM	#3
joedoh Senior Member Join Date: May 2007 Location: Doodah Kansas Posts: 7,774	Re: 49 GMC on s10 frame th4OO help long tailshaft? not sure it matters long or short, only should matter to driveshaft length really. since you are moving the engine back you will need to make a trans crossmember anyway, and make a driveshaft anyway. thats just my cruddy opinion based on my limited understanding of the long vs short tailshafts, which is a big deal to use in a chevelle but not such a big deal in a truck you are making new engine and trans mounts and driveshaft. and I will say it in pittsburghese: get dahn nere an nat and yinz can use the tranny, I's stunned! __________________ the mass of men live lives of quiet desperation if there is a problem, I can have it. new project WAYNE http://67-72chevytrucks.com/vboard/s...d.php?t=844393

09-15-2016, 03:20 PM	#5
joedoh Senior Member Join Date: May 2007 Location: Doodah Kansas Posts: 7,774	Re: 49 GMC on s10 frame th4OO help yep you should be golden! I grew up in the north hills, go stillers! __________________ the mass of men live lives of quiet desperation if there is a problem, I can have it. new project WAYNE http://67-72chevytrucks.com/vboard/s...d.php?t=844393

09-15-2016, 04:41 PM	#6
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,718	Re: 49 GMC on s10 frame th4OO help Since you will have to build a driveshaft anyhow the longer tail shaft is just that = longer. If you were hardcore on having a short tail shaft you could pull the guts out of the trans, swap tail shafts and extension housings and go again. It may not be worth the effort and cost though. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.



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